Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2021 6 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 06/22/2021   07:09:31   (   0.09,-128.40) (  -0.23,-130.08)  189.74                80
 06/24/2021   06:54:37   (   0.10,-128.37) (   0.34,-127.11)  142.92                80
 06/24/2021   19:15:52   (  -0.09,-128.34) (   0.75,-132.27)  446.82                80
 06/26/2021   06:42:24   (   0.11,-128.33) (   0.99,-124.16)  475.00                80
 06/26/2021   19:03:39   (  -0.10,-128.30) (   0.11,-129.31)  114.58                80
 06/28/2021   18:54:06   (  -0.11,-128.27) (  -0.53,-126.36)  217.60                80
 06/29/2021   07:15:29   (   0.10,-128.29) (  -0.61,-131.54)  370.35                80
 07/01/2021   07:03:16   (   0.11,-128.25) (   0.03,-128.59)   38.22                80
 07/03/2021   06:48:23   (   0.11,-128.21) (   0.69,-125.64)  293.68                80
 07/03/2021   19:09:37   (  -0.10,-128.17) (   0.47,-130.78)  297.52                80
 07/05/2021   19:00:04   (  -0.10,-128.12) (  -0.18,-127.83)   34.04                80